Rod-bending tool



March 4,1930. c. G. FILLMORE 1,749,476

ROD BENDING TOOL Filed March 7, 1928 11 .4. Mar/ s 6: 7371mm.

Patented Mar. 4, 1930 "STATES PATENT QFFEE CHARLES G. FILLMORE, OFW'ALTI-IAM, MASSACHUSETTS non-nennme 'TOOL Application filed March 7,1928.

.5 installation in place particularly the'rods of mats for concretereinforcement and the like. The principal objectof theinvention is toprovide an improved process for bending rods or the like which aresupported by structural work after the said rods have been installed inplace in the work.

Another object of the invention is to provide an improved bending toolwhich will f straddlethe .rod to be bent, engage the structural supportfor the same and apply the the bending operation; I

Fig. 2is a cross section on hne 2-2 of and arrangements shown andbending pressure at the point required.

'Another'object of the invention is to provide an improved tool forbending rods or the like which are supported by structural work-whichwill. be simple in construction, eflicient and economical.

' Anotherobject of the invention is to provide a tool of this characterwith easily attached and operable lever means.

Anotherobject of the invention is to pro- ,vide means on sucha tool thatwill present a non' slipping grip on the work itself and on thestructure connected with the same.

Other objects and advantages of the inven tion will become apparent fromthe following description'taken in connection with the V and it will beapconstruction may be made without departing from the spirit of theinvention as expressed in the accompanying claims. I, therefore, do notwish to be limited to the exact details described as the preferred formsonlyhave' been given byway ofillustration.

Referring to the drawings:

Fig. .1 is an elevation partially in cross section showing the'tool inuse at the end of Fig; 1;" Fig. 3 is a cross SGCtlQIl on line 3-3 -ofFig j and expensive operation to remove from the structure, take themout Serial No. 259,731.

of Fig. 1 showing held together by spacer rods. Between the structuralbeams the rods are bent down below the floor level so that the bentportion of the rod will lie about one inch from the bottom of theconcrete flooring. It has been found from experience that this positiongives the best result as to structural strength and wearing properties.It has been usual in the prior art to bend these rods before they areplaced in the building. If there is any variation in the building fromthe plans, or if the rods have not been properly bent they do not fitand it is a difiicult these rods and have The price of labor for thembent to shape.

' operators who perform this kind of work is high and the work ofre-bending and positioning rods of this nature has constituted a largeitem of expense in the laying of concrete floors in the past.

It is, therefore, one of the prime objects of my invention to provide animproved process for doing this work and means which can do this work inthe building as the floors are laid without removing the parts to havethem adjusted to fit conditions. It has been found that in this processconsiderable expense is saved and a much more desirable job obtained.

eferring to the drawings wherein similar reference characters denotecorresponding parts throughout, the cross rods 1 are laid across thefloor beams 2 initially occupying the horizontal position illustrated bythe dot and dash line 3 in Fig. 1, one end of the rods being secured inplace and the other end thereof being left free and unsecured untilafter the bending operations hereinafter described have been completed,and then the other end is secured in place to fit the structuralrequirements.

It is the object of the present invention to bend a portion of the'rod 1after it has top flange of the been laid over the beams and secured asde scribed above, down below the top of the beam 2 until it occupies aposition illustrated by the portion 4 of the rod 1 in Fig. 1. Thisposition is approximately about one inch above the bottom level of theconcrete flooring indicated by dot and dash line 5 in Flg; 1. To performthis bending I provide my bender tool which has the body portion 6having a bent down portion 7 which is separated into two arms 8,terminating in the two clamp hook members 9. The separated jaws 8straddle the rod 1 as indicated in Fig. 4 and the hook members 9 engagethe under side of the floor beam 2 as indicated in Fig. 1. At a positionspaced from the downwardly bent portion 7 is a second downwardly bentportion 10 which leads into a substantially horizontally disposedbending portion 11 having a curved cross section 12 to bear on the rod1, as indicated in Fig. 3. from the portion 11 is an ascending inclinedarm 13 which continues into a horizontal portion 14 lying substantiallyon a line with the portion 6. Secured to the handlering 15 into which isfitted the handle 16. A bolt member 17 is extended through V the portion6, the ring 15 and the handle 16 and terminates beyond the upper'portionof the ring 15. Onthe upper portion of the bolt 17 is placed the nut 18to hold the parts together. Through the portion 14 of the tool a secondbolt 19 is extended passing through the handle 16 and beyond. On theupper side of the handle 16 the washer 20 and the nut21 are provided. IThe handle. 16 is extended longitudinally beyond. the portion 14 to anextent to give the required'leverage.

The operation of the device is as follows: The rods 1 are hooks 9 of thebender are placed under the beam 2 sothatthe rod 1 passes between theseparated arms 8, the secwhe-rein the section 14 is tion 11 of thebender coming in contact with the rod 1 along the curved surface 12 ofthe section 11. Pressure is applied upon the end of the handle16 and therod 1 is bent down, the relationship until a portion of it assumes withthefioor indicated by 4 in Fig. 1, which position is substantially aboutone inch above the bottom of the floor level 5.

In Fig. 5 I have shown a modification bent down and provided with theseparated arms and hook members similar to the opposite .end so thateither end of the bender may be used to grip the structural beams. thismodification if the left hand hook is engaged with the beam the benderwill be operated by pushing down on the handle, whereas if'the righthand hooks are used it will be operated bypulling up on the handle. Ifdesired also the handle could be reversed in case one of the hookmembers were broken.

It will be understood from the foregoing other to form the mat for andtied together by tie rods transverse to the 7 Continuing portion 6 isthe V laid across the beam 2. The

It will be seen that in description that a plurality of rods 1 are laidover the beams 2,.properly spaced from each the concrete filling rods 1at required distances between the beams 2. ()nc end of the rods 1 aresecured in the structure the other end being left free.

The rods 1 are then bent down between the beams 2 as described abovecarrying with them the cross tie rods. The free ends of the rods 1 arethen secured in the structure and the concrete poured over the matbetween the beams 2 on top of the form mold indicated by the line 5. Theconcrete is then allowed to set and the form mold removed,

leaving the concrete floor complete with the mat embedded therein. Themat has been completed with the rods in place in the work thus insuringeconomy of operation and accuracy of fit and placement.

From the foregoing desoriptionit will be I seen that I have providedsimple, efiicient and economical means for obtaining all the ob jects ofthe invention.

Having described my invention, I claim:

1. In a device of the characterdescribed, a rigid member providing afulcrum end and a bend forming projection and comprising two separatedhandle connecting portions .in longitudinal alignment, a bifurcated hookmember depending from theconnecting portion forward of the forwardhandleconnection, a bend forming projection depending from the forwardconnecting portion rearwardly of the forward handle connection, aportionaconnecting the projecting portion and the rear handle connectingportion at a point forward of the rear handle connection, a handlemember overlying the two handle connecting portions, and means securingthe handle to each of the handle connecting portions. i

2. In a device ofthe character a rigid member providing a fulcrum endand a bend forming two separated handle connecting portions inlongitudinal alignment, a bifurcated hook member depending from theconnecting portion forward of the forward handle connection, a bendforming projection depending from the forward connecting portionrearwardly of the forward handle connection and having a concave bearingsurface, a portion connecting the projecting portion and the rear handleconnecting portion at a point forward of the rear handleconnection, ahandle member overlying the two handle connecting described, I

projection and comprising of the rear handle forward handle bend formingprojection depending from the forward connecting portionrearwardly ofthe forward handle connection, a portion con necting the projectingportion and the rear handle connecting portion at a point forward of therear handle connecting portion, a bandle member overlying the two handleconnecting portions, and means securing the handle to each of the handleconnecting portions. 1 I a 4. In a device of the character described, arigid member providing a fulcrum end and abend forming projection andcomprising two separated handle connecting portions in longitudinalalignment, a hook member depeding from the connecting portion forward ofthe forward handle connection, a bend forming projection depending fromthe forward connecting portion rearwardly of the connection, a portionconnecting the projecting portion and the rear handle connecting portionat a point forward connecting portion, a handie member overlying the twohandle connecting portions, a tubular ferrule on the forward end of thehandle portion, means through the handle and ferrule securing theforward end of the handle to the forward connecting portion, and meanssecuring the rear connecting portion to the handle.

5. In a device of the character described, a rigid member providing afulcrum end and a bend forming projection and comprising two separatedhandle connecting portions in longitudinal alignment, a hook memberclepending normally from the forward connecting portion and bentrearwardly to un derlie the same, a member depending normally from theforward connecting portion rearwardly of the handle connection, a bendforming projection member extending rearwardly of the said dependingportion and substantially parallel with the connecting portions, aportion connecting said bend forming member and the rearward connectingportion at a point forward of the rear handle connection, and meanssecuring the handle to each of the handle connecting portions.

6. In a device of the character described, a rigid member providing afulcrum end and a bend forming projection and comprising two separatedhandle connecting portions in longitudinal alignment, a hook memberdepending from the connecting portion forward. of the forward handleconnection, a bend forming projection depending from the forwardconnecting portion rearwardly of the forward handle connection, aportion connecting the projecting portion and the rear handle connectingportion at a point forward of the rear handle connection, ahandle memberoverlying the two handle connecting portions, and bolt means securingthe handle a rigid member providing a fulcrum end and a bend formingprojection comprising a base portion having a depending hook portionadjacent one end, a bend forming projection depending intermediate thehook and the opposite end of said base portion, a curved contact bearingsurface on the bend forming projection lying substantially parallel withthe base portion, and a handle secured to the base portion.

CHARLES G. FILLMORE.

